Mechanical motor



(No Model.)

- J. M. DIGKSON.

MECHANICAL MOTOR. No. 557,774. Patented Apr. '7, 1896.

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UNTTED STATES JAMES MONROE DICKSON, OF ROSENEATII, MISSISSIPPI.

M ECHANICAL MOTOR.

SPECIFICATION forming part of Letters Patent No. 557,774, dated April 7,1896.

Application filed August 22, 1895.

To (0Z5 whom it may concern:

Be it known that 1, James MONROE DICK- sOX, of Roseneath, in the countyof Yazoo and State of Mississippi, have invented a new and ImprovedMechanical Motor, of which the following is a full, clear, and exactdescription.

The invention relates to certain improvements in mechanical motors suchas are adapted to be operated by hand or foot power for drivingmachinery of various kindsas, for example, vehicles, boats, pumps,cottongins, &c. and the object of the invention is to provide a deviceof this character of a simple and inexpensive nature, and of a compactand strong construction, which shall be adapted to be convenientlyoperated by foot power to convert reciprocating into rotary motion andto multiply the movement.

The invention consists in a rock-shaft having treadles connected to andadapted to operate it, gearing for multiplying the movement of therock-shaft, a screw-shaft driven from said gearing, a power-shaft, andgearing between the screw-shaft and power-shaft, whereby the latter isoperated from the former and has continuous rotary movement imparted toit.

The invention also contemplates certain novel features of theconstruction, combination, and arrangement of the various parts of theimproved motor, whereby certain important advantages are attained andthe device is made cheaper, simpler, stronger, more durable, andotherwise better adapted and more convenient for use than othermechanical motors heretofore employed, all as will be hereinafter fullyset forth.

The novel features of the invention will be carefully defined in theclaims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a vertical mid-section taken longitudinally through themotor constructed according to my invention. Fig. 2 is a plan new of themotor, and Fig. 3 is an end view of the motor embodying my improvements.

The motor is constructed with a frame 1, of suitable strength and form,wherein is journaled a longitudinal rook-shaft 2, having a length equalto substantially half that of the Serial No. 560,138. (No model.)

frame and provided with a treadle-lever 3, fixed on one end, having atopposite ends treadles 4 to receive the feet of the operator, as will bepresently described.

At its opposite end the rock-shaft 2 is provided with a segment-rack 5,extending upward, as seen in Fig. 1, and meshing with a pinion 6 on theend of a short shaft 7, journaled on an extension 8 of the frame 1, saidshaft 7 being also provided with a large gearwheel 9, meshing at itslower side with a pinion 10 on one end of a shaft 11, journaled at thelower part of the machine-frame 1, in 65 alinement with the rock-shaft2.

The shaft 11 carries a screw or worm 12, meshing with a spirally-toothedor helicoidal segment-gear 13, fixed on a shaft 14, journaledtransversely of the upper part of the frame 1, and said segment 13 isprovided with an arm 15, to the end of which is pivoted one end of aconnecting-rod 16, the opposite end of which is coupled to a crank 17,formed in the powershaft 18, which may be provided with a pulley or thelike, wherefrom the machinery may be driven or which may itselfconstitute the driving or machine shaft. To the segment 13 is pivoted,at a point diametrically opposite the arm 15, a second connecting-rod19, the opposite end of which is coupled to a second crank 20, formed inthe shaft 18 and set opposite or quartering to the crank 17.

In operation when it is desired to use the motor the operator presses onthe treadles 4c, first with one foot and then with the other, so as torock the shaft 2 alternately in opposite directions, the movement ofsaid shaft being transmitted and multiplied by the spurwheel-and-piniongearing to the screw-shaft 11 and transverse shaft 14, which is therebyrocked in such a way as to impart continuous rotative movement to thepower-shaft 18 of the motor, as will be readily understood.

As shown in the drawings, the ends of the transverse shaft 14 areprovided with cranks 21, which may be connected with the pumpingdevices, &c., when desired.

The motor constructed in accordance with my invention is, as will bereadily understood, of an extremely simple and inexpensive construction,is very durable, and not at all liable to be broken or deranged while inuse. Furthermore, being actuated by foot-power, it

is specially well adapted for use in cases where it is essential thatthe hands shall be employed, as in steering a boat, for example.

From the above description it will be apparent that considerablemodification may be made in the motor as herein shown and describedwithout material departure from the principles and spirit of theinvention, and for this reason I do not wish to be understood aslimiting myself to the precise form of the device herein set forth.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. A mechanical motor comprising a rockshaft, asecond transverse shaft geared thereto, a power-shaft, connecting-rodscoupled at opposite ends to quartered cranks on the power-shaft and onsaid transverse shaft and the said quartered cranks, substantially asset forth.

2. A mechanical motor comprising a rockshaft, a screw-shaft gearedthereto, a transverse shaft having a segmental helicoidal gear meshingwith the screw of the screwshaft, apower-shaft connecting-rods coupledat opposite ends to quartered cranks on the respective power andtransverse shafts and the said quartered cranks, substantially as setforth.

3. A mechanical motor comprising a rockshaft, a screw-shaft gearedthereto, a transverse shaft having a segmental helicoidal gear meshingwith the screw of the screwshaft, an arm on the transverse shaft, apowershaft having quartered cranks, and connecting-rods coupled at oneend to the respective quartered cranks on the power-shaft, one of saidrods having its other end coupled to the arm 011 the transverse shaft,and the other rod having its other end coupled to the segment-gearing,substantially as set forth.

JAMES MONROE DICKSON.

\Vitnesses:

J. J. MARTIN, K. S. BENJAMIN.

